diff --git a/.drone.yml b/.drone.yml
index e953834..e413635 100644
--- a/.drone.yml
+++ b/.drone.yml
@@ -4,7 +4,11 @@ name: default
 
 steps:
   - name: validate
-    image: 'docker/compose:1.29.2'
+    image: 'docker/compose:alpine-1.29.2'
     commands:
       - for DIR in */ ; do if [[ $(expr match "$DIR" "_.*") != 0 ]] ; then echo "SKIPPING $DIR" && continue; fi && test -f $DIR/.env.dist && cp $DIR/.env.dist $DIR/.env ; done
       - for DIR in */ ; do if [[ $(expr match "$DIR" "_.*") != 0 ]] ; then echo "SKIPPING $DIR" && continue; fi && echo $DIR && cd $DIR && docker-compose config && cd .. ; done
+    when:
+      event:
+        include:
+          - pull_request